Theft alaem



Nov. 8, 1927.

C. P. SEITZ THEFT ALARM Filed Feb, 16, 1927 2 Sheets-Sheet l Nov. 8, 1927.

C. P. SEITZ THEFT ALARM Filed Feb, 16, 1927 2 Sheets-Sheet 2 ..1 1 1 a v n Patented Novn 8, 1927.,

4UNITED STATES CASPER l. SEITZ,

THEFT Application led February i This invention relates to new and useful improvements in attachments for automobiles, and particularly to devices by means of which such automobiles `may be secured against theft. f

One object is to provide a device which may be Ieasily applied to an automobile, and which is adapted to be actuated by a moving part of the automobile, whereby to sound a signal, which will warn others of the fact that the automobile is being driven by` a person other than the rightful ownert Another object is to provide a device of this character which will continue to sound the alarm, should an attempt be made to stop such alarm, by destroying certain parts o the device.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawings.

In the drawings:

'Figure l `is aside elevation of the invention and such parts of the automobile as are necessary to impart' a clear understanding of the location thereof.

Figure 2 is a vertical longitudinal sectional view through the invention, showing the parts in normal or 4neutral position, the dotted lines indicating the position of the parts when the device isrready to give the alarm, should the automobile be set in motion by an' unauthorized person.

Figure 3 is a vertical sectional view on the line 3-3 of. Figure 2.

Figure 4 is a detail view showing the latch-` ing means 41 in operative position.

Referring particularly to the accompany ing drawing, 1() represents a portion ofthe instrumentboard, 11 a portion of the flywheel housing, and 12 a portion of the flywheel, of an automobile, in connection with which the present invention is particularly adapted for use. f

Properly secured within an opening 13, in the instrument-board 10, and projecting forwardly therebeyond, is a casingf14. the forward end of which is provided with a tube 15, leading to and passing through an opening in the fly-wheel housing 11. Connected to the forward end of the tube 15, within the housing 11, is a cup 16, the end remote from its connection with the tube being closed by a diaphragm 17 Within this cup, and bear ing against the tube attached end thereof,

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18, which normally urges the diaphragm into the full line position of Figure 2. Proporly secured within the casing 14, and in concentric spaced relation thereto, is a cylindrical member 19, the inner end of `which is closed by the diaphragm 20, while the other end is closed by Qthe hollow head 21, said hollow head having a communication with the space between the cylinder and the casing by means of the openings 22.V Secured to the headf21, and disposed within the cylinder 19, is a loekincluding the spring pressed latch-bolt 23, which projects toward one side of the cylinder, as clearly seen in the sectional view Fig. 2.,` A key-hole 24 is formed centrally in the head 21 to permit the owner to release the latch-bolt, when desired. Slidable through the said head 21 is a rod 25, the outer end of which is provided with a ybutton 26, to be grasped by the operator, while the inner end is extended toward the center of the cylinder where it is secured to the center of the diaphragm 20. In the longitudinally extending portion of the rod 25 Vthere is formed a notchv or recess 27, into which the nose of the latch-bolt 23is adapted to engage, when said rod is pulled outwardly the required distance.

Mounted in the housing 11`v adjacent the fly-wheel 12, is a bracket 28, in which is snpported the rock shaft 29. One ,end of the rock shaft is provided with a crank arm 30 which is properly connected with a stem 31. andvwhich stem is ysecured in the center of the diaphragm 17. The other end of the ,shaft 29 is formed with a radially extending arm 32 which is terminallyformed with an langularly extending tubular member 33. within which is rotatably disposed a shaft 34. Connected with one end of the tubular member 33 is a horn casing 35, within which is arranged the diaphragm 3G, of the horn, and mounted on 'the adjacent end of the shaft 34 is a. head 37 which is adapted to operate to vibrate the diaphragm, upon rotation of `the shaft. On thevother end` of the shafty 34 is` secured a small wheel 38 which is ,adapted to be brought into engage ment with the periphery of the fly-wheel .12, inthe operation of the invention. Fixed on the shaft 29, inwardly of the crank arm 30, is a cam 39. beneath the shaft 29, is a small rock shaft 40, one end of which is formed with aA cranlr arm 41 disposed in the path of the said cam while the other end is held means of Supported in the bracket 28,

in Leanne? a spring" 42. lt to be uniglerstood that a vacuum exists Within the casingi4, the ube l5, and the cup lo, which is strong enough to permit the diaphragm 17 to assume its normal position et the Lfull lines olf Fig'. 2 against the tension oit the spring` lll. This position also iuaintains the ivlieel out ot engagement with the ily-Wheel l2.

lflfhen the owner des.' es to jilace his antoinobile in a condition whereby an alarm will sound, when the automobile is being` opeiated by an unauthorized person, he sin'ijLl gral-ips the button QG, and pulls the rod a out until the latch QS snaps Ato the recess This movement ot the rod Q5 tienes the da phragm 20 iniva 1ly tovvarc the in Qrni'ientboard, which in turn affects the dialrhri "jn 17, so that the latter is boivcc inivardly toward the spring` i8, thus compressing said spring. This movement of the diaphragm Il actuates the stein Si, whereby to rock the sha/itt 29 in one direction to canse 'the Wheel 3S to engage with the lily-Wheel. lli/lien the motor is set in motion, the ily-Wheel will drive the `Wheel 3S, and the shaft so that the head 8"? causes the diapliri 25 to vih nte, and sound the alarm.

1 Should the thieit be unfamiliar with the device, he vfill be "unable 'to stop the horn, such horn, as vfell as the 'other parts ot the device are so located to be difcnlt to reach, especially in suoli haste as the thiet would be. Vllie continuous iding et the horn vvould indicate to other persons that the automobile Was being stolein and ratlicr than be ought, the thief would abandon the cai. Should7 however, the thict lnioiv that vacuum played an important part in the operation of the device. lie might puncture the device at suoli a point as to destroy the vacuum, with the hope that this might render the device inoperative. rijliis `would be futile7 lor, upon breaking' the vacuum, the spring i8 would immediately e);- pand to tient the difii'ihragm l/li' outwardly, with the result that the shalt 29 would ho rocked in the opposite direction, causing vtho Wheel 88 to engage with the ily-Wheel. As the 'shalt 29 rotates in such direction the cani 39 with the cranli arm dl? to 'rocli the shalt 40, whereby subsequently the said crank arm ivill engage ivitii vthe com to hold the sh'att against return rockingmovement. Thus the parte u'oild set the horn in lopeintion again. l the thiol' tempt the release by toe use ot a pump, all he `would accomplish would be to tiii'ther dei: the diifipliragms il and Q0. VU'pon proper manipulation oit a hey, in the hey-hole 251-, the ovvner can release the latch 23 from the rod 25, whereupon the diaphragins l? and 2O will assnme their normal neutral positions so that the automobile may be operated ivithoiit soundingl the horin lillh'at is claimed is:

l. The combination. with movingpart ot .f'cliiclei ot an aiadiblc signa a. rotating actuating` part, vacuum com: means tor moving the rotating); part into and out ot engagement with said moving' part, and means movable into and ont ot engagement with the vacuum controlled means 'for holding the rotatingf part in engagement with the moving' part whereby to cause the uons sounding` ot the signal, at times, or hold'ng the rotating` part ont ot encarrement `with the moving parti to render signal inactive at times.

The combination with a moving part ot :in automobile, et an audible signal includa hori and nember arranged to be al ual-ed by said moving part to sound the horn`` vacuum controlled means lor maintaining the said incii'iber out ot jengagement li the nioving part. and means for movingJ l. Aill the vacuum controlled means whereby to eng said member with said moving par 'llhe combination With a moving part et :in antomobile, oit a horn including; a diaphralnjm means novable into and ont ot engagement With said moving part tor vibrating the diaphragm. means normally holding the movable means ont ot engagement with the moving` partI7 and vacuum controlled moans 'lor movingsaid movable means into engagement with said moving)- part.

The combination with a moving part ot :intoinobilo. ot an audible signal includ-inf; an actuating part movable into and out ot engagement With said moving part, vacniim controlled means tor'inaintaining :i tuating part out 'ot engagement with the moving; part, and means ttor moving the vacuum controlled means to engage said actnatinc; part vvitli said moving' part.

5. The combination with a moving; part of an antomobile7 ot an audible signal including an ctuating part adapted to bc moved into :ind out of engagement with said moviiio part, means holding; die actuatingr part normally ont ot engagement with the moving part vacnnni chambers, diaphragme in the chambers, connections between said ac tuating; part and one ot the diaphrzigmsj and means tor movi 7 5 the other diaphragm ijrhercby to actnate the i t-uained dihphragm to move the actuating part into en- ;iigeineiit with the moving; aart.

t?. il theft. pre nlcr :For a vehicle coni- Jrising an alarm including un actnating part novable into and out oi eii T with a iov parli t the vehicle, connected vacum cliamhm's. diaphragm in each chamchambers, a dia-pl ragni in each oi the clio,...

lll() llti bers, a horn including a diaphragm and a rotatable actuating member for* vibrating the horn diaphragm and movable into and out ot' engagement with a moving part of the automobile, means holding the rotatable member normally out of engagement With the moving part of the automobile, means for moving one of the diaphragme whereby to affect the othei1 diaphragm to engage the aetuating member with the moving part, means for looking the parts in operative position, and means for moving the actuating membei` into engagement with the moving part upon breaking of the vacuum.

In testimony whereof, I affix my signature.

CASPER P. SEITZ. 

